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'G. LIELBA FURNACE FOR GALVANIZIN Patented Feb 27, 1894 (No Model.) 4 Y3 Sheets-Sheet 2.

V G. IBBA PURNAGE FOR G ANIZIN 8 0R TANKS.

No. 515,594. Patented Feb. 27, 1894.

(No Model.) v '3 Sheets-Sheet 3. G. LIBBAU. FURNACE FOR GALVANIZING POTSOR TANKS.

No. 515,594. 1 Patented Feb. 27, 1894.

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UNITED STATES PATENT rrrcn.

GUSTAV LIEBAU, OF MOSCOW, RUSSIA.

FURNACE FOR GALVANIZIN G PUTS OR TANKS.

SPECIFICATION forming part of Letters Patent No. 515,594, dated February27', 189%- Application filedMay 15,1393. Serial No. 74,267. (No model.)

'Moscow, in the district of Moscow and Empire of Russia, have inventedcertain new and useful Improvements in Furnaces for Galvanizing Pots orTanks, of which the following is a specification.

This invention relates to certain new and useful improvements infurnaces for galvan- 12mg and other pots, and has for its object theproduction of a furnace, the fines of which are so arranged that theflames or products of combustion are directed first t0 the top of thepot instead of at the bottom, as has heretofore been the case, and inwhich the fines may be easily reached and cleaned.

To these ends therefore, my said invention consists in a furnace havinga series of fines arranged outside of a galvanizing pot or tank, and inheating proximity thereto, the upper flue being in direct communicationwith the fire pit, and the lower flue communicating with the stack orchimney, as hereinafter more fully described and pointed out in theclaims.

Referring to accompanying drawings illustrating my invention, and in theseveral figures of which like parts are similarly designated, Figure 1,is a top plan View. Fig. 2, is a section taken on the linewwl ig. 1.Fig. 3, is a transverse section. Fig. 4, is a transverse section takenon the line 1 ,Fig. 1. Fig. 5, is a top plan View, partly brokenaway,illusirating a modification of my invention, and Fig. 6, isavertical longitudinal section thereof.

a, is the masonry work of the furnace provided with the stack or chimneyb, and the fire pit c. The products of combustion generated in this pit,pass upwardly into the fine cl, which surrounds the galvanizing or otherpot or tank 6, set in the furnace a. As shown in the drawings, thisupper fine (1,

passes horizontally through the masonry a,

and around the top of the tank e, descending on an incline atf, to jointhe flue g, which also surrounds the tank e, through masonry a, and ath, descends on an incline to join the due '13, which, in the same mannersurrounds the tank, communicating on the incline j, with the stack orchimney b. Manifestly the arrangement constitutes in reality but onefine passing from the fire pit, encircling the pot or tank at diiferentaltitudes, and finally passing out at the stack or chimney. But I do notwish to limit myself to the exact construction herein shown anddescribed as whenlong tanks are used,such for example as thoseemployedin coating pipe, when more than one fire may be desirable oreven necessary, the lines can pass from the fire pit or pits, extend acertain distance around the pot or tank, and then loop or double back onthemselves, finally passing out at the stack or chimney, as hereinaftermore fully described. The due series d,f, g, h, i, and j, is preferablyconstructed of fire brick, which may be fitted into one another andtherefore access may be readily had to the interior of the fines toclean or repair them.

Running longitudinally through the mason ry a, and beneath the tank orpot e, is the passage way k, and from this passage, opening Z, and Z,normally closed by iron plates, or brick partitions, extend to thelowermost flue, as shown particularly in Figs. 2 and 3. Through saidopenings the lower loop of the flue series is readily accessible forcleaning or repairing. 1 also prefer to provide between the fiue'and themasonry the air space m, or this space may be filled with sand, or othernon-conducting material, preventing the masonry from overheating, andconfining the heat to the fines and the tank or pot.

It will be obvious from the foregoing that the tank or pot is protectedfrom direct contact with the fire, and that the flames in no case touchsaid tank, by reason of which the tank is rendered more durable, and theliability of burning through reduced to the minimum. This end may bestill further conduced by coating the tank previous to setting insideand out with a fire proofing compound, adhering to the iron, such asdescribed and claimed in a concurrent application filed by me anddesignated as Serial No. 474,258 filed May 11, 1893, and when so coated,it will be found thattheinternal coating greatly reduces the formationof dress, while the heat being applied first to the upper part of thetank, and prevented from external radiation by reason of the air, ornon-conducting space m, results in a great saving of fuel.

Obviously many changes maybe made in the construction described andillustrated herein without departing from the principle and scope of myinvention, the gist of which lies in applying the heat of the furnacefirst to the upper part of a galvanizing or other tank.

In Figs. 5 and 6, of the drawings, I have shown a modificationparticularly adapted for long tanks, such as those used for coatingpipes. In this modification, two fire places a, c, are used, preferablyseparated by the strip of masonry m. From each of these fireplaces theupper flue 61, passes along one side of the pot or tank, and around theend thereof opposite said fire-places, communicating through f, with thefine g, thence through h, to fiue z', thence through f, tofiue y, at ornear the bottom of the pot or tank, and thence through 7, to the stackor chimney b. The fines are made into two independent series by thetongue of masonry m at the end of the tank opposite the fireplaces, andobviously as few or as many fiues may be used in the series as may bedesirable but I have found in practice the construction and numberherein set forth, productive of good results. It will be apparent alsothat the fines may communicate with each other either directly,abruptly, and at right angles, or by a gradual incline, as shown in Fig.4, without departing from the principle and scope of my invention. Othermodifications may also be made, such, for instance, as placing a fire atdiagonally opposite ends, but I prefer the construction shown anddescribed,

as it leaves the pot or tank readily accessible by the workmen. Againthe fire places may be more widely separated, and extend a shortdistance along the opposite sides of the tank, at the same end thereof,without materially changing or altering the construction andarrangementof the fines, or other parts of the invention.

What I claim as new, and desire to secure by Letters Patent, is

1. In furnaces for galvanizing and other pots and tanks, a pot or tank,and a suitable number of vertical series of connected fines surroundingthe same, the topmost of said fines communicating directly with thefire, and the lowermost of said fines with the stack 0r chimney,substantially as described.

2. A pot or tank, a plurality of fire-places at or near one end thereof,and a vertical series 3. In furnaces for galvanizing and other pots andtanks, a pot or tank, a vertical series of connected fines arrangedoutside thereof and in heating proximity thereto, the upper finecommunicating with the fire, and the lower fiue with the stack orchimney, and a course of refractory material interposed between thefines aud the pot or tank, whereby said products of combustion areprevented from coming in direct contact with said pot or tank,substantially as described.

4. In furnaces for galvanizing and other pots and tanks a pot or tank, asuitable number of fines arranged above. and opening into, one another,and surrounding, but separated from immediate contact with the pot ortank; a suitable number of combustion chambers, and a suitable number ofoutlets for the products of combustion; connections from the former tothe uppermost of said fines, and connections from the latter with thelowermost of said fines; the heat and products of combustion passingdirectly into the uppermost of said fines, thence around the pot ortank, and thence to the outlets, thereby applying the most intense heatto the most exposed portion of the metal bath in the pot or tank, and atthe same time removing the heat from immediate contact therewith,substantially as described.

Signed at New York, in the county of New York and State of New York,this 9th day of May, A. D. 1893.

GUSTAV LIEBAU.

WVitnesses:

FREDERIC OARRAGAN, EUGENE V. MYERS.

